3.14 Sticky Articles

When you select an article the current article buffer will be reused
according to the value of the variable
gnus-single-article-buffer. If its value is non-nil (the
default) all articles reuse the same article buffer. Else each group
has its own article buffer.

This implies that it’s not possible to have more than one article buffer
in a group at a time. But sometimes you might want to display all the
latest emails from your mother, your father, your aunt, your uncle and
your 17 cousins to coordinate the next Christmas party.

That’s where sticky articles come in handy. A sticky article buffer
basically is a normal article buffer, but it won’t be reused when you
select another article. You can make an article sticky with:

A S

Make the current article sticky. If a prefix arg is given, ask for a
name for this sticky article buffer.

To close a sticky article buffer you can use these commands:

q

Puts this sticky article buffer at the end of the list of all buffers.

k

Kills this sticky article buffer.

To kill all sticky article buffers you can use:

Function: gnus-kill-sticky-article-buffersARG

Kill all sticky article buffers.
If a prefix ARG is given, ask for confirmation.